How to Prepare Numerical Ability for RBI Assistant Prelims 2022

By BYJU'S Exam Prep

Updated on: September 25th, 2023

RBI Assistant Preliminary Examination 2022 is scheduled on 26th and 27th March across the country as per the official notification. With very few days left for the exam, it is high time to start preparing numerical ability for the RBI Assistant Prelims exam right away. 

The numerical Ability section will play a major role in the RBI Assistant Prelims selection. Today we are sharing the Numerical Ability preparation strategy for RBI Assistant Prelims Exam. Go through this now to get a complete idea about the Numerical Ability section of the exam.

RBI Assistant Prelims Numerical Ability Preparation Strategy

The Numerical Ability Section carries a weightage of 35 marks in the RBI Assistant Prelims Exam 2022. There will be 35 questions i.e. each question carries one mark. As the competition is increased, your focus should be on achieving 28+ marks in this section to be on the safer side. Before moving forward you should be completely aware of the RBI Assistant syllabus and RBI Assistant exam pattern.

1. Simplification and Approximation – 

Expected Number of Questions: 10-15

Level of Questions – Easy to moderate

Preparation tips :

  • This section carries the maximum weightage in the RBI Assistant Prelims exam. Also, it consists of less time-consuming questions that make it the most scoring topic.
  • In this topic, the questions are based on Basic rules of BODMAS [B: Brackets (first solve small brackets, then middle brackets and then large brackets), O: Of, D: Division, M: Multiplication, A: Addition, S: Subtraction ]
  • In the questions of Simplification, always do the calculation with the exact digit. You should neither approximate the question nor the answer.
  • In approximation questions, you can approximate the question as well as the answer given in the option, but up to a certain limit. For example, if the digit is 4.3, take it as 4, but if the digit is 4.5 or more than 4.5, you can take it as 5. You need to find the nearest value in approximation questions, not the exact answer.
  • You need to have good and speedy calculation skills for this topic. To sharpen your calculation skills, learn tables(1-30) , squares(1-50) , cubes(1-30) .
  • You should be thorough with the concepts of  Number System,  Square & Cube, Fractions & Decimals, Surds & Indices.
  • Also learn the techniques and short tricks to calculate squares, cubes, square root, and cube root.

You can practice the most expected questions in the RBI Assistant Test series of BYJU’S Exam Prep’s Bank Test series.

2. Number Series – 

Expected Number of questions: 5

Level of Questions: Easy to Moderate

Preparation tips :

  • Number series is a very scoring topic. In this topic, two types of questions can be asked –

1. Find out the missing number in the given series.
2. Find out the wrong number in the given series.

  • In both types of questions, the given series follows a specific pattern. The candidates are required to observe the particular pattern and find out the missing/wrong number in the series accordingly.
  • In missing number questions, a number at the start/middle or end of the series will be missing. You will be asked to find out the missing number according to a specific pattern.
  • In wrong number questions, all the numbers in a series will be given, but one of them will not follow the pattern, which is followed by the remaining numbers. The candidate needs to find out the wrong number in the series. This is also known as Odd-one out question.
  • Try to practice a good number of questions from this topic so that you can be familiar with most of the patterns.
  • There are various patterns in number series questions, but some patterns are very common and often repeated in questions such as Square Pattern, Square root pattern, Cube pattern, cube root pattern, Prime Number pattern, Pattern based on Differences, Pattern based on double differences, Table of any number pattern, Geometric Series pattern, etc.
  • Following questions were asked in RBI Assistant Prelims Exam 2016 –
  • 7,21,5,23,3,?
  • 15,22,32,46,65,?
  • 9,10,18,27,91,?
  • 17,23,35,59,?,205
  • 6,7,16,51,208,?

To watch concept classes and chapter-wise sessions by exam-qualified experts, you can try our RBI Assistant Online Coaching.

3. Data Interpretation – 

Expected Number of Questions: 5 (10 questions may also be asked)

Level of questions – Easy to moderate

Preparation tips

  • Data Interpretation involves Bar graph, Tabulation, Pie Chart, Line graph, Mixed type, and Paragraph DI(Caselets) topics.
  • To have a good grip on DI questions, it is essential to be acquainted with the concepts of Percentage, Ratio and Proportion, and Average. Almost all the questions of DI are based on the concept of these topics.
  • To master this section, the candidate must be thorough with a percentage to fraction conversion, fraction to percentage conversion, short tricks of conversion, Tables (at least up to 20), Squares, cubes, Square roots.
  • Options play a great role in DI questions. In some questions, an exact to-the-point answer is not required. The options are given in such a manner that approximation can be applied. So you must look at the options before answering the question to answer questions smartly.
  • Read the instructions in the Data Interpretation questions very carefully before attempting the question.
  • Also, do not start solving the whole table/Bar/Pie chart given. Only focus on the questions which are asked and solve only that data.

You may go through the below table to get all the Numerical Ability study notes for RBI Assistant 2022




Simplification & Approximation


Calculation Short Tricks


D.I Basics


Number series


Quadratic Equation


Simple Interest


Compound Interest


Mixture & Alligation






Pipes & Cisterns


Age-based problems


Profit, Loss & Discount


Ratio & Proportion


Time, Speed & Distance


Time & Work



4. Miscellaneous Questions –

Expected Number of Questions: 15

Level of questions – Moderate to difficult

Preparation tips – 

  • These questions tend to take more time in solving. Various topics of Arithmetic are included in the Arithmetic Section. Have a clear knowledge and understanding of the basic concepts of Arithmetic Chapters.
  • Some important miscellaneous chapters on which you should focus more are:
  1. Average,
  2. Ratio & Proportion,
  3. Percentage, Profit & Loss,
  4. Problem-based on Ages,
  5. Mixture & Allegation,
  6. Simple Interest & Compound Interest,
  7. Time & work,
  8. Speed, time & distance.
  • Do not avoid these chapters as these topics are essential in other topics like Data Sufficiency,  Data Interpretation.

5. Quadratic Equations –

Expected Number of Questions – 0 to 5

Level of questions – Easy to Moderate

Preparation tips –

  • This section is not included in the syllabus of the Assistant Level Exam, But keeping in mind the changing Level of Exam pattern, It is wise to prepare this topic too.
  • Be well aware of the basic concepts, factorization techniques, and short tricks of Quadratic Equations.
  • After solving the equations, deduce the result and choose the right option very carefully. Sometimes students solve the equations correctly but select the wrong option.

You may go through the following article for your RBI Assistant Prelims 2022 preparation:

Sr. No Article Link
1 Last 1 Month Strategy for RBI Assistant Prelims 2022
2 Preparation Tips For RBI Assistant 2022 Exam
3 How to Prepare English for RBI Assistant Prelims 2022
4 How to Prepare Reasoning Ability for RBI Assistant Prelims 2022

Expert Tips for RBI Assistant Numerical Ability Section –

  • Once you have understood the concepts, practice the maximum questions of the given chapters. You can solve questions from RS Agarwal, Sarvesh Kumar, Rajesh Verma, M.Tyra. Also, do not forget to solve the previous year’s RBI Assistant question papers.
  • Keep a notebook with you. Write down important points, formulas, tips, and tricks. Also, make notes of your mistakes which means whichever mistakes you are repeating, note them down and revisit them often.
  • Go through the previous year’s RBI Assistant cut-off to understand the level of competition.
  • Short tricks and techniques are good to implement to save precious time, but avoid risky shortcuts which are not applicable to every question.
  • Solve as many questions and mock tests as you can solve to get a good grip on topics.
  • Always practice with a watch/timer. The most important thing in a competitive exam is time management.

Related Useful Links

RBI Assistant Syllabus RBI Assistant Selection Process
RBI Assistant Question Papers RBI Assistant Salary 

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